admin-components: normalize tool-group css formatting (maintainable)

tests/Feature/AdminComponentsCssToolGroupFormattingTest.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminComponentsCssToolGroupFormattingTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function loginAsPlatformAdmin(): void
+    {
+        $this->seed();
+
+        $this->post('/admin/login', [
+            'email' => 'platform.admin@demo.local',
+            'password' => 'Platform@123456',
+        ])->assertRedirect('/admin');
+    }
+
+    public function test_admin_components_css_contains_tool_group_blocks_with_braced_formatting(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $css = file_get_contents(public_path('css/admin-components.css'));
+        $this->assertIsString($css);
+
+        // 只做轻量“存在性/格式”断言：避免回到单行写法（不利于长期维护）
+        $this->assertStringContainsString(".tool-grid{\n", $css);
+        $this->assertStringContainsString(".tool-group{\n", $css);
+        $this->assertStringContainsString(".tool-group-subtitle{\n", $css);
+    }
+}